The bug:
I found a random shipwreck on mountains.
How to produce:
Create a new world with seed:
-25748818
Do:
/tp -918 127 -896
MC-239977
Random Shipwreck on mountain.
Resolved
Awaiting Response
0
I was not able to reproduce this. Was this world upgraded from an earlier version? If so, this is probably a duplicate of MC-239865.